High Quality Content by WIKIPEDIA articles! Saint-Aubin-du-Cormier is a commune in the Ille-et-Vilaine department in the region of Brittany in north-western France. Saint-Aubin-du-Cormier is located at 29 km (18 mi) northeast of Rennes and 49 km (30 mi) south of Mont Saint-Michel. The communes bordering are Mézières-sur-Couesnon, Saint-Jean-sur-Couesnon, Saint-Georges-de-Chesné, Mecé, Livré-sur-Changeon, Liffré, Gosné, Ercé-près-Liffré and Gahard. The area is most notable for the Battle of Saint-Aubin-du-Cormier, the decisive conflict of the guerre folle between rebellious feudal aristocrats and the French king. The rebels sought to resist the concentration of power in Paris and retain regional feudal independence. The combined rebel forces were defeated, paving the way for the creation of a unified French state.